They are working. The issue is that most server admins leave the bot setting at 10. This setting is divided between deer and barbarians. So then these 10 bots spawn in the world but they are spread between the players on the server and it very quickly appears that there are no deer.

We are considering increasing the in-game slider to more than 20 (given better performance in 0.6) but the server admins can set it to any number they want. They just have to do it.